题解 | 乒乓球

def process_game(s, win_score):
    w, l = 0, 0  
    results = []
    for ch in s:
        if ch == "W":
            w += 1
        else:
            l += 1
       
        if (w >= win_score or l >= win_score) and abs(w - l) >= 2:
            results.append(f"{w}:{l}")
            w, l = 0, 0 

    if w != 0 or l != 0:
        results.append(f"{w}:{l}")
    if w == 0 and l == 0:
        results.append(f"{w}:{l}")
    return results


s = input().strip()

results_11 = process_game(s, 11)

results_21 = process_game(s, 21)

for res in results_11:
    print(res)
print()  
for res in results_21:
    print(res)